A Retrospective Study of the Correlation of in Vitro Chemosensitivity Using ATP-TCA with Patient Clinical Outcomes in Acute Myeloid Leukemia
Overview
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Purpose: To evaluate the predictive value of the in vitro chemosensitivity using ATP-TCA method to compare the clinical efficacy of patients with AML.
Methods: Bone marrow or peripheral blood samples were collected from 65 patients with AML, and the in vitro chemosensitivity of four drugs (cytarabine/idarubicin/decitabine/aclacinomycin) was measured by an ATP-tumor chemosensitivity assay.
Results: Aclacinomycin and cytarabine had the highest chemosensitivity rates (66.7%, 8/12 and 58.5%, 38/65, respectively), while idarubicin and decitabine had rates of 6.5% (3/46) and 0% (0/35), respectively. Complete remission (CR) was achieved in 66.2% (43/65) of patients, and there was a statistically significant correlation between CR and in vitro chemosensitivity for cytarabine (47.7% vs 18.5%, p = 0.002), but not for the anthracyclines (p = 0.950). In addition, three other factors significantly correlated with CR: disease status (p = 0.005), FLT3-ITD/TKD mutation (p = 0.003) and chemotherapy regimens (p = 0.004). Furthermore, multiple logistic regression analysis revealed that the sensitivity of cytarabine was one of the significant risk factors for CR [hazard ratio (HR) = 5.52; 95% confidence interval (CI) = 1.47-20.70; p = 0.011].
Conclusions: The in vitro chemosensitivity as tested by ATP-TCA demonstrated a significant correlation with CR for chemotherapy and can be a useful tool to optimize personalized treatments for patients with AML.
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